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Nickel positive electrode for fiber battery

一种镍正极、电池的技术,应用在电池电极、碱性蓄电池电极、镍蓄电池等方向,能够解决没有达到实用的水平等问题,达到高容量、实现寿命、长寿命的效果

Inactive Publication Date: 2011-10-12
KAWASAKI JUKOGYO KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the scheme of forming a concave-convex porous body by machining has also been mentioned many times, but it has not yet reached a practical level.

Method used

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  • Nickel positive electrode for fiber battery
  • Nickel positive electrode for fiber battery
  • Nickel positive electrode for fiber battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0091] Graphite fibers (fibers obtained by twisting two commercially available polyacrylonitrile fibers and then graphitized) constituting the current collector were fibers with an average diameter of 12 μm. The average diameter of each individual fiber constituting the fiber was 6 μm.

[0092] Nickel-boron alloy plating (containing 1% boron) was carried out on the graphite fiber by the precipitation method of nickel-boron alloy plating (containing 1% boron) using the reducing action of dimethylamine borane. After electroless nickel plating, nickel was plated by an electroplating method. The electroplating solution for electroplating nickel uses a so-called Watts solution mainly composed of 350 g / liter of nickel sulfate, 45 g / liter of nickel chloride, and 42 g / liter of boric acid. Specifically, 3000 graphite fibers with a length of 50 mm were sandwiched between two foamed nickel sheets, fixed by crimping, and put into Watt's solution as a joint. In addition, a nickel plate wi...

Embodiment 2

[0124] In order to investigate the effect of adding aluminum hydroxide to nickel hydroxide, 1600 g of nickel nitrate (6 hydrate) and 420 g of aluminum nitrate (9 hydrate) were added to 5000 g of water, and the pH was adjusted to 5 to obtain a solution for electrolysis. In this solution, the nickel-plated fibrous current collector obtained in the same manner as in Example 1 is disposed as a cathode, the nickel plate is disposed as an anode, and a polypropylene non-woven fabric is disposed as a separator between the two electrodes to perform electrolysis. . Electrolysis condition is current density 20mA / cm 2 , The electrolysis time is 10 minutes. In this case, nickel hydroxide and aluminum hydroxide were electrolyzed with an electrolysis efficiency of about 42%. The content of aluminum hydroxide was 22 mol% in terms of metal (that is, aluminum relative to nickel). The mixed layer of nickel hydroxide and aluminum hydroxide electrolytically deposited on the fibrous current coll...

Embodiment 3

[0130] In order to investigate the effect of adding conductive agent and binder to nickel hydroxide, 2000g of nickel nitrate (6 hydrate), 85g of granular carbon material, and 21g of PVA were added to 5000g of water, adjusted to pH=5, and obtained Solution for electrolysis. In this solution, the nickel-plated fibrous current collector obtained in the same manner as in Example 1 is disposed as a cathode, the nickel plate is disposed as an anode, and a polypropylene non-woven fabric is disposed as a separator between the two electrodes to perform electrolysis. , the condition of electrolysis is that the current density is 20mA / cm 2 , The electrolysis time is 10 minutes. In this case, the granular carbon material and PVA were precipitated simultaneously with nickel hydroxide electrolysis, and the electrolysis efficiency was about 39%. The content of the particulate carbon material was 20% by weight. The average thickness of the mixed layer of nickel hydroxide, granular carbon m...

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Abstract

Disclosed is a nickel positive electrode for a fiber battery, said nickel positive electrode being capable of providing the battery with not only long life but also high output and high capacity. The nickel positive electrode for a fiber battery is obtained by coating a carbon fiber with nickel, then causing a cathodic polarization in a nickel nitrate bath using the nickel-coated carbon fiber as the negative electrode, and then immersing a deposit, which is deposited on the surface of the carbon fiber by the cathodic polarization, in a caustic aqueous alkaline solution.

Description

technical field [0001] The present invention relates to a nickel positive electrode for a fiber battery having a fibrous current collector. [0002] The nickel positive electrode of the present invention is aimed at nickel positive electrodes for secondary batteries using an aqueous solution as an electrolyte, specifically nickel positive electrodes for nickel-hydrogen batteries or nickel-cadmium batteries, etc., and can also be applied to nickel-iron batteries. , Nickel positive electrode for nickel-zinc battery, etc. [0003] These batteries are power sources for portable use, storage use, and mobile use, but the main object of the invention is, for example, backup power sources used under incomplete charge and discharge conditions, power sources for mobile bodies, and the like. Background technique [0004] Currently, a secondary battery using a widely used aqueous solution as an electrolytic solution is composed of a plate-shaped positive electrode, a separator, and a p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/32H01M4/75H01M10/30
CPCH01M4/29H01M4/32H01M4/663H01M10/30Y02E60/10H01M4/04H01M4/75
Inventor 高崎智昭境哲男向井孝志岩城勉堤香津雄西村和也
Owner KAWASAKI JUKOGYO KK
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